CN213630387U - Hydrophily fan heater system - Google Patents
Hydrophily fan heater system Download PDFInfo
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- CN213630387U CN213630387U CN202022655404.8U CN202022655404U CN213630387U CN 213630387 U CN213630387 U CN 213630387U CN 202022655404 U CN202022655404 U CN 202022655404U CN 213630387 U CN213630387 U CN 213630387U
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- 230000010148 water-pollination Effects 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 230000001404 mediated effect Effects 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
本实用新型公开了一种水媒暖风器系统，该系统包括由空气管道依次连通的风机、暖风器和空气预热器以及设置于暖风器空气侧出口的风温测点；还包括依次串联的一号至三号锅炉给水加热器；还包括暖风器水侧进口管道和出口管道，以及依次布置于进口管道上的水泵和水温测点，进口管道一端与二号锅炉给水加热器的出口连通，另一端与暖风器的进口连通，出口管道一端与二号锅炉给水加热器的进口连通，另一端与暖风器的出口连通；还包括用于调节暖风器进水温度的再循环管道和再循环阀，其中，再循环管道一端与出口管道连通，另一端与水泵进口连通；本实用新型利用更低品位的锅炉给水作为暖风器热源，经济性好，且暖风器系统自动运行，实现无人值守。
The utility model discloses a water-mediated air heater system, which comprises a fan, an air heater and an air preheater which are connected in sequence by an air pipe, and an air temperature measuring point arranged at the air side outlet of the air heater; No. 1 to No. 3 boiler feed water heaters connected in series in sequence; it also includes the inlet pipe and outlet pipe on the water side of the heater, as well as the water pump and water temperature measuring points arranged in sequence on the inlet pipe, and one end of the inlet pipe is connected to the No. 2 boiler feed water heater. The outlet of the pipe is connected with the inlet of the heater, the other end is connected with the inlet of the heater, one end of the outlet pipe is connected with the inlet of the feed water heater of the No. A recirculation pipeline and a recirculation valve, wherein one end of the recirculation pipeline is communicated with the outlet pipeline, and the other end is communicated with the pump inlet; the utility model utilizes lower-grade boiler feed water as the heat source of the heater, which is economical, and the heater The system runs automatically and realizes unattended operation.
Description
Technical Field
The utility model belongs to the technical field of the boiler, concretely relates to hydrophily fan heater system can be used to improve boiler air inlet temperature.
Background
With the continuous promotion of the low-carbon and environment-friendly policy of China, the economic index and the environment-friendly index of a boiler are continuously improved, the energy-saving space is continuously compressed, and the operation energy consumption is continuously increased, wherein the blockage of an air preheater is particularly prominent. The denitration device is a main facility for removing nitrogen oxides, the operation condition of the denitration device directly influences the current operation situation of a downstream device, the operation condition of the existing denitration device is generally poor, ammonia escape is serious, the denitration device is a direct reason for blocking an air preheater, and the treatment difficulty is high. The air heater is one of the main means for effectively relieving the blockage of the air preheater, can improve the cold end temperature of the air preheater, relieve the blockage of the air preheater and improve the air inlet temperature of the boiler, thereby improving the boiler efficiency and being widely popularized in the north and the south of China. The heat sources of the air heater mainly comprise two types of steam and flue gas waste heat, wherein the steam air heater has high energy consumption and is unfavorable for improving the economy of a unit; most of the flue gas waste heat air heaters are coupled with the flue gas waste heat recovery device, energy consumption is lower than that of a steam air heater, gradient utilization of flue gas waste heat is achieved, and the flue gas waste heat air heaters have better economical efficiency.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a hydrophily fan heater system, this system utilizes the boiler feedwater of lower grade as the fan heater heat source, and the system is independent, has better economic nature and reliability, and fan heater system automatic operation, realizes unmanned on duty.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a hydrophily air heater system is used for improving the inlet air temperature of a boiler and comprises a fan 1, an air heater 2, an air preheater 3 and an air temperature measuring point 12, wherein the fan, the air heater 2 and the air preheater 3 are sequentially communicated through an air pipeline; the boiler water supply system also comprises a first boiler water supply heater 4, a second boiler water supply heater 5 and a third boiler water supply heater 6 which are sequentially connected in series; the system also comprises a water side inlet pipeline 8 and a water side outlet pipeline 9 of the air heater, and a water pump 7 and a water temperature measuring point 13 which are sequentially arranged on the water side inlet pipeline 8 of the air heater, wherein one end of the water side inlet pipeline 8 of the air heater is communicated with an outlet of the second boiler water-feeding heater 5, the other end of the water side inlet pipeline 8 of the air heater is communicated with a water side inlet of the air heater 2, one end of the water side outlet pipeline 9 of the air heater is communicated with an inlet of the second boiler water-feeding heater 5, and the other end of the water side outlet pipeline 9 of the air heater is communicated with a water side outlet of the; the air heater also comprises a recirculation pipeline 10 used for adjusting the water inlet temperature of the air heater 2 and a recirculation valve 11 arranged on the recirculation pipeline 10, wherein one end of the recirculation pipeline 10 is communicated with the water side outlet pipeline 9 of the air heater, and the other end of the recirculation pipeline is communicated with the inlet of the water pump 7.
The air heater 2 is heated by boiler feed water.
The air temperature at the air side outlet and the water temperature at the water side inlet of the air heater 2 can be adjusted.
According to the control method of the hydrophily air heater system, the air temperature measuring point 12 and the water pump 7 form negative feedback closed regulation, when the measured value of the air temperature is lower than a set value, the rotating speed of the water pump 7 is increased, the water inflow of the air heater 2 is increased, and therefore the air temperature is increased to the set value; when the measured value of the wind temperature is higher than the set value, the rotating speed of the water pump 7 is reduced, and the water inflow of the air heater 2 is reduced, so that the wind temperature is reduced to the set value;
the water temperature measuring point 13 and the recirculation valve 11 form negative feedback closed regulation, when the measured water temperature value is lower than a set value, the opening degree of the recirculation valve 11 is reduced, the amount of recirculated water is reduced, and therefore the water temperature is increased to the set value; when the measured value of the water temperature is higher than the set value, the opening degree of the recirculation valve 11 is increased to increase the amount of recirculated water, thereby lowering the water temperature to the set value.
The utility model discloses following beneficial effect has:
a hydrophily fan heater system utilize boiler feed water of lower grade as the fan heater heat source, the system is independent, has better economic nature and reliability, the fan heater not only can improve air heater cold junction temperature, alleviates air heater stifled ash, can improve boiler air inlet temperature moreover, improves boiler efficiency, fan heater system air side export wind temperature, water side import water temperature are adjustable, automatic operation realizes unmanned on duty.
Drawings
Fig. 1 is a system diagram of the present invention, in which 1 is a fan, 2 is a fan heater, 3 is an air preheater, 4 is a boiler feed water heater, 5 is a boiler feed water heater, 6 is a boiler feed water heater, 7 is a water pump, 8 is a fan heater water side inlet pipeline, 9 is a fan heater water side outlet pipeline, 10 is a recirculation pipeline, 11 is a recirculation valve, 12 is an air temperature measuring point, and 13 is a water temperature measuring point.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the hydrophily air heater system of the present invention includes a fan 1, an air heater 2, an air preheater 3 and an air temperature measuring point 12 arranged at the air side outlet of the air heater 2, which are sequentially communicated by an air pipeline; the boiler water supply system also comprises a first boiler water supply heater 4, a second boiler water supply heater 5 and a third boiler water supply heater 6 which are sequentially connected in series; the system also comprises a water side inlet pipeline 8 and a water side outlet pipeline 9 of the air heater, and a water pump 7 and a water temperature measuring point 13 which are sequentially arranged on the water side inlet pipeline 8 of the air heater, wherein one end of the water side inlet pipeline 8 of the air heater is communicated with an outlet of the second boiler water-feeding heater 5, the other end of the water side inlet pipeline 8 of the air heater is communicated with a water side inlet of the air heater 2, one end of the water side outlet pipeline 9 of the air heater is communicated with an inlet of the second boiler water-feeding heater 5, and the other end of the water side outlet pipeline 9 of the air heater is communicated with a water side outlet of the; the air heater also comprises a recirculation pipeline 10 used for adjusting the water inlet temperature of the air heater 2 and a recirculation valve 11 arranged on the recirculation pipeline 10, wherein one end of the recirculation pipeline 10 is communicated with the water side outlet pipeline 9 of the air heater, and the other end of the recirculation pipeline is communicated with the inlet of the water pump 7. The air heater 2 is heated by boiler feed water, and the temperature of outlet air and the temperature of inlet water can be adjusted.
The utility model discloses a working process does:
the air heater 2 takes water from the outlet of the boiler water supply heater 5, and enters the air heater 2 through the water pump 7. Boiler feed water and boiler inlet air exchange heat and then return to the inlet of the second boiler feed water heater 5. In the running process of the system, the wind temperature measuring point 12 and the water pump 7 form negative feedback closed regulation, when the measured value of the wind temperature is lower than a set value, the rotating speed of the water pump 7 is increased, the water inflow of the air heater 2 is increased, and therefore the wind temperature is increased to the set value; when the measured value of the wind temperature is higher than the set value, the rotating speed of the water pump 7 is reduced, the water inflow of the air heater 2 is reduced, and therefore the wind temperature is reduced to the set value. The water temperature measuring point 13 and the recirculation valve 11 form negative feedback closed regulation, when the measured water temperature value is lower than a set value, the opening degree of the recirculation valve 11 is reduced, the amount of recirculated water is reduced, and therefore the water temperature is increased to the set value; when the measured value of the water temperature is higher than the set value, the opening degree of the recirculation valve 11 is increased to increase the amount of recirculated water, thereby lowering the water temperature to the set value. The system utilizes lower-grade boiler feed water as a heat source of the air heater, is independent, has better economical efficiency and reliability, automatically operates the air heater system, and realizes unattended operation.
Claims (3)
1. A hydrophily fan heater system is characterized by being used for improving the inlet air temperature of a boiler and comprising a fan (1), a fan heater (2), an air preheater (3) and a wind temperature measuring point (12) arranged at the air side outlet of the fan heater (2), wherein the fan, the fan heater (2) and the air preheater (3) are sequentially communicated through an air pipeline; the boiler is characterized by also comprising a first boiler water supply heater (4), a second boiler water supply heater (5) and a third boiler water supply heater (6) which are sequentially connected in series; the water-side water-supply air heater further comprises a water-side inlet pipeline (8) and a water-side outlet pipeline (9) of the air heater, and a water pump (7) and a water temperature measuring point (13) which are sequentially arranged on the water-side inlet pipeline (8) of the air heater, wherein one end of the water-side inlet pipeline (8) of the air heater is communicated with an outlet of the second boiler water-supply heater (5), the other end of the water-side inlet pipeline is communicated with a water-side inlet of the air heater (2), one end of the water-side outlet pipeline (9) of the air heater is communicated with an inlet of the second boiler water-supply heater (5), and the other end of the water-side outlet pipeline of the air heater is; the air heater is characterized by further comprising a recirculation pipeline (10) used for adjusting the water inlet temperature of the air heater (2) and a recirculation valve (11) arranged on the recirculation pipeline (10), wherein one end of the recirculation pipeline (10) is communicated with a water side outlet pipeline (9) of the air heater, and the other end of the recirculation pipeline is communicated with an inlet of the water pump (7).
2. A water borne air heater system according to claim 1, characterized in that said air heater (2) is heated by boiler feed water.
3. The system as claimed in claim 1, wherein the air heater (2) has adjustable air outlet temperature and water inlet temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022655404.8U CN213630387U (en) | 2020-11-17 | 2020-11-17 | Hydrophily fan heater system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022655404.8U CN213630387U (en) | 2020-11-17 | 2020-11-17 | Hydrophily fan heater system |
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| Publication Number | Publication Date |
|---|---|
| CN213630387U true CN213630387U (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022655404.8U Active CN213630387U (en) | 2020-11-17 | 2020-11-17 | Hydrophily fan heater system |
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| CN (1) | CN213630387U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268273A (en) * | 2020-11-17 | 2021-01-26 | 西安热工研究院有限公司 | A kind of water medium heater system and control method |
-
2020
- 2020-11-17 CN CN202022655404.8U patent/CN213630387U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268273A (en) * | 2020-11-17 | 2021-01-26 | 西安热工研究院有限公司 | A kind of water medium heater system and control method |
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